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  1. pubchem.ncbi.nlm.nih.govPubChem

    PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.

  2. pubchem.ncbi.nlm.nih.gov › periodic-tablePeriodic Table of Elements - PubChem

    Chemical Element Data in PubChem. PubChem is providing this periodic table page in order to help navigate abundant chemical element data available in PubChem. When exploring the table or list views on this page, please note the links to dedicated pages for each element.

  3. pubchem.ncbi.nlm.nih.gov › docs › compoundsCompounds - PubChem

    PubChem Compound records are derived summaries that give users access to a rich set of related content. Compound records contain unique chemical structures extracted from contributed Substance records through standardization.

  4. en.m.wikipedia.org › wiki › PubChemPubChem - Wikipedia

    PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine, which is part of the United States National Institutes of Health (NIH).

  5. pubchem.ncbi.nlm.nih.gov › search › searchPubChem Structure Search

    PubChem Structure Search. Search By: Name/. Text. Identity/. Similarity.

  6. pubchem.ncbi.nlm.nih.gov › docs › citation-guidelinesCitation Guidelines - PubChem

    Learn how to cite PubChem database as well as individual records from PubChem.

  7. pubchem.ncbi.nlm.nih.gov › docs › aboutAbout - PubChem

    Learn about PubChem chemical database, browse or search the documentation and find PubChem staff contact information.

  8. pubchem.ncbi.nlm.nih.gov › docs › structure-searchStructure Search - PubChem

    PubChem Structure Search allows the PubChem Compound Database to be queried by chemical structure or chemical structure pattern.

  9. pubmed.ncbi.nlm.nih.gov › 33151290PubChem in 2021: new data content and improved web interfaces

    Jan 8, 2021 · PubChem (https://pubchem.ncbi.nlm.nih.gov) is a popular chemical information resource that serves the scientific community as well as the general public, with millions of unique users per month. In the past two years, PubChem made substantial improvements.

  10. chemspider.comChemSpider | Search and share chemistry

    ChemSpider is a free chemical structure database providing fast text and structure search access to over 100 million structures from hundreds of data sources. Search by chemical names. Systematic names.